Preview

cell energy

Good Essays
Open Document
Open Document
475 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
cell energy
Associate Program Material

Cell Energy Worksheet

Answer the following questions:

Cellular respiration:

What is cellular respiration and what are its three stages?
Cellular respiration is the complete cycle of a glucose molecule that happens to be using oxygen. The three stages of cellular respiration are: Glycosis, the Krebs cycle, and the electron transport chain.

What is the role of glycolysis? Include the reactants and the products. Where does it occur?
Glycolysis is the first stage in cellular respiration. Glycolysis occurs in the cytoplasm also. Glucose is converted and then passed onto the Krebs cycle.

What is the role of the citric acid cycle? Include the reactants and the products. Where does it occur?
The citric acid cycle is also known as the Krebs cycle. This is the second stage in cellular respiration. The role of the citric acid cycle is to break down acids and transfer energy to the electron transport chain.

What is the role of the electron transport system? Include the reactants and the products. Where does it occur?
The role of the electron transport chain is to produce electrochemical proton across the membrane. This is the third stage in cellular respiration and it occurs in the mitochondria.

Photosynthesis:

What is the overall goal of photosynthesis?
- The purpose of photosynthesis is to produce energy for the plants to live on.

Because photosynthesis only occurs in plants, why is it essential to animal life?
- It works in a food chain. The animals eat the plants. If the plant doesn’t go through photosynthesis then the plant will die, eventually killing off all forms of life.

What is the role of the light reactions? Include the reactants and the products. Where does it occur?
The main role of light reactions is to collect energy over a broad Verizon and convert it into energy. This is part of photosynthesis and it occurs in the stroma and the mitochondria.

What is the role of

You May Also Find These Documents Helpful

  • Good Essays

    SCI/230 Cell worksheet

    • 885 Words
    • 4 Pages

    The electron transport system is the final stage in cell respiration. The main role is to transport electrons formed from NADH to oxygen in order to release the energy cells use to make ATP.…

    • 885 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    When the electron has reached photosystem I it is attached to a special pair of chlorophyll in the reaction center called p700. Light energy is then absorbed by pigments which are passed on to the reaction center , the electron which is in p700 is then boosted to a high energy level which is then transferred to a acceptor molecule. As the special pairs of electron is missing it is then replaced by a new one from photosystem II.…

    • 1319 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    There are three stages of cellular respiration and these are, glycolysis, the krebs cycle and the electron transport chain (ETC). Glycolysis is the first step in a biomedical pathway of respiration. It occurs in the cells cytoplasm and no oxygen is needed for this. The next stage is the Krebs cycle, this takes place in the mitochondrial matrix and is a cycle of reactions. One ATP is created for every complete cycle and oxygen is needed for this. The last stage of cellular respiration is ETC, this also occurs in the mitochondrial matrix and the molecules are passed next along the ETC. Oxygen is also needed for this. Cellular respiration is an example of an catabolic reaction as it is the breakdown of larger molecules to Mooresville smaller ones.…

    • 1101 Words
    • 5 Pages
    Good Essays
  • Good Essays

    (4) uses of energy in biological processes (B); active transport; muscle contraction; nerve transmission; synthesis; translocation; nitrogen fixation; receptors…

    • 1087 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Cellular respiration is divided into three different stages. Glycolysis, the first stage of cellular respiration, splits simple carbohydrates such as glucose into two molecules of ATP, two molecules of pyruvic acid, and two electron carried that have high energy that are known as NADH. This part of cellular respiration does not need oxygen, therefore ATP can be created by glycolysis, but it only makes a small amount and this method is not the most efficient method. The next stage in cellular respiration is the Citric Acid Cycle. This stage commences when the two pyruvate acids are converted into acetyl CoA. This pyruvate oxidation will produce 2 NADH and then the acetyl CoA will enter…

    • 1940 Words
    • 8 Pages
    Powerful Essays
  • Satisfactory Essays

    Chapter 7

    • 594 Words
    • 2 Pages

    The pyruvate molecules produced during glycolysis contain a lot of energy in the bonds between their molecules. In order to use that energy, the cell must convert it into the form of ATP. To do so, pyruvate molecules are processed through the Kreb Cycle, also known as the citric acid cycle.…

    • 594 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Cell Energy Worksheet

    • 504 Words
    • 3 Pages

    The role of the electron transport system is to transfer the electrons through electron carriers. The energy released by electron pumps hydrogen ions across the inner membrane of the mitchondrin, creating high hydrogen ion concentration.…

    • 504 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Cell Energy

    • 1140 Words
    • 5 Pages

    * The citric acid cycle also known as the Krebs cycle. The purpose is to combine and transform…

    • 1140 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    Lab 5 Cellular Respiration

    • 3401 Words
    • 14 Pages

    Cellular respiration is an ATP-producing catabolic process in which the ultimate electron acceptor is an…

    • 3401 Words
    • 14 Pages
    Powerful Essays
  • Satisfactory Essays

    Cellular Respiration is a process by which cells obtain energy from glucose. Cells are broken down into simple food molecules. Cellular Respiration undergoes two processes: Glycolysis and The Krebs Cycle. In Glycolysis enzymes help in chemical reactions that break down oxygen and glucose into different molecules. Pyruvic and 2 molecules of ATP are produced during Glycolysis. In the Krebs cycle nine reactions occur. Pyruvic acid is broken down and carbon dioxide and energy are given off. This energy is then used to create ATP and water.…

    • 342 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Glycolysis breaks glucose into two pyruvate molecules, to be broken down in the citric-acid cycle. For this reason, it must occur before the steps of aerobic respiration can begin.…

    • 1430 Words
    • 6 Pages
    Good Essays
  • Powerful Essays

    Photosynthesis

    • 2078 Words
    • 9 Pages

    Photosynthesis is crucial to the survival of most species on the earth. It produces oxygen which is important for cellular respiration and glucose which provides the energy for living organisms in order to survive. If plants are not undergoing photosynthesis efficiently, or at all, then not enough oxygen and glucose are being produced. This can lead to detrimental effects on the entire world, including highly toxic levels of CO2 in the atmosphere and starvation (Endler 1993).…

    • 2078 Words
    • 9 Pages
    Powerful Essays
  • Satisfactory Essays

    9.3 After pyruvate is oxidized, the citric acid cycle completes the energy-yielding oxidation of organic molecules…

    • 1458 Words
    • 6 Pages
    Satisfactory Essays
  • Powerful Essays

    Cellular respiration is an ATP-producing catabolic process in which the electron receiver is an inorganic molecule. It is the release of energy from organic compounds by chemical oxidation in the mitochondria within each cell. Carbohydrates, proteins, and fats can all be metabolized, but cellular respiration usually involves glucose: C6H12O6 + 6O2 → 6CO2 + 6H2O + 686 Kcal of energy/mole of glucose oxidized. Cellular respiration involves glycolysis, the Krebs cycle, and the electron transport chain. Glycolysis is a catabolic pathway that occurs in the cytosol and partially oxidizes glucose into two pyruvate (3-C). The Krebs cycle occurs in the mitochondria and breaks down a pyruvate (Acetyl-CoA) into carbon dioxide. These two cycles both produce a small amount of ATP by substrate-level phosphorylation and NADH by transferring electrons from substrate to NAD+. The Krebs cycle also produces FADH2 by transferring electrons to FAD. The electron transport chain is located at the inner membrane of the mitochondria and accepts energized electrons from enzymes that are collected during glycolysis and the Krebs cycle, and…

    • 1687 Words
    • 7 Pages
    Powerful Essays